diff options
Diffstat (limited to 'drivers/ata/libata-acpi.c')
| -rw-r--r-- | drivers/ata/libata-acpi.c | 77 |
1 files changed, 50 insertions, 27 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 70b77e0899a8..865a552c91e6 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -118,8 +118,8 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap) ap->pflags |= ATA_PFLAG_INIT_GTM_VALID; } -static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, - u32 event) +static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device + *dev, u32 event) { char event_string[12]; char *envp[] = { event_string, NULL }; @@ -127,39 +127,67 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, struct kobject *kobj = NULL; int wait = 0; unsigned long flags; - + acpi_handle handle, tmphandle; + unsigned long sta; + acpi_status status; + if (!ap) ap = dev->link->ap; ehi = &ap->link.eh_info; spin_lock_irqsave(ap->lock, flags); + if (dev) + handle = dev->acpi_handle; + else + handle = ap->acpi_handle; + + status = acpi_get_handle(handle, "_EJ0", &tmphandle); + if (ACPI_FAILURE(status)) { + /* This device is not ejectable */ + spin_unlock_irqrestore(ap->lock, flags); + return; + } + + status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); + if (ACPI_FAILURE(status)) { + printk ("Unable to determine bay status\n"); + spin_unlock_irqrestore(ap->lock, flags); + return; + } + switch (event) { case ACPI_NOTIFY_BUS_CHECK: case ACPI_NOTIFY_DEVICE_CHECK: ata_ehi_push_desc(ehi, "ACPI event"); - ata_ehi_hotplugged(ehi); - ata_port_freeze(ap); - break; - - case ACPI_NOTIFY_EJECT_REQUEST: - ata_ehi_push_desc(ehi, "ACPI event"); - if (dev) - dev->flags |= ATA_DFLAG_DETACH; - else { - struct ata_link *tlink; - struct ata_device *tdev; - - ata_port_for_each_link(tlink, ap) - ata_link_for_each_dev(tdev, tlink) - tdev->flags |= ATA_DFLAG_DETACH; + if (!sta) { + /* Device has been unplugged */ + if (dev) + dev->flags |= ATA_DFLAG_DETACH; + else { + struct ata_link *tlink; + struct ata_device *tdev; + + ata_port_for_each_link(tlink, ap) { + ata_link_for_each_dev(tdev, tlink) { + tdev->flags |= + ATA_DFLAG_DETACH; + } + } + } + ata_port_schedule_eh(ap); + wait = 1; + } else { + ata_ehi_hotplugged(ehi); + ata_port_freeze(ap); } - - ata_port_schedule_eh(ap); - wait = 1; - break; } + spin_unlock_irqrestore(ap->lock, flags); + + if (wait) + ata_port_wait_eh(ap); + if (dev) { if (dev->sdev) kobj = &dev->sdev->sdev_gendev.kobj; @@ -170,11 +198,6 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, sprintf(event_string, "BAY_EVENT=%d", event); kobject_uevent_env(kobj, KOBJ_CHANGE, envp); } - - spin_unlock_irqrestore(ap->lock, flags); - - if (wait) - ata_port_wait_eh(ap); } static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data) |